11421011331 has 12 divisors (see below), whose sum is σ = 16499112552. Its totient is φ = 7613040096.

The previous prime is 11421011323. The next prime is 11421011347. The reversal of 11421011331 is 13311012411.

It is a happy number.

11421011331 is a `hidden beast` number, since 114 + 210 + 11 + 331 = 666.

It is not a de Polignac number, because 11421011331 - 2³ = 11421011323 is a prime.

It is a super-3 number, since 3×11421011331³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (11421011531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1801 + ... + 151146.

It is an arithmetic number, because the mean of its divisors is an integer number (1374926046).

Almost surely, 2^11421011331 is an apocalyptic number.

11421011331 is a deficient number, since it is larger than the sum of its proper divisors (5078101221).

11421011331 is a wasteful number, since it uses less digits than its factorization.

11421011331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161250 (or 161247 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 11421011331 its reverse (13311012411), we get a palindrome (24732023742).

The spelling of 11421011331 in words is "eleven billion, four hundred twenty-one million, eleven thousand, three hundred thirty-one".